Did television actress Allison Mack try to recruit celebrities Emma Watson and Kelly Clarkson to an alleged sex cult? Mack, who appeared in the ‘Smallville’ series, was arrested Friday for allegedly recruiting woman as sex "slaves" to service the leader of a group to which she belonged, according to prosecutors. The group, called NXIVM (Nexium), is based in Albany, New York. The 35-year-old pleaded not guilty in Brooklyn federal court to charges of sex trafficking and forced labor.